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Buck/Boost  / Step Up/Step Down Power Supplies, Page 1
Power Supplies -- Main Page           Converters -- Main Page
Buck/Boost:  Page 1,   Page 2
Last Updated on: Saturday, August 30, 2014 10:28 AM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
2 AA cells power step-down regulator -  01/07/99 Issue of EDN  DC/DC conversion is particularly challenging when both the input and output voltages are low. Step-up ICs that operate with inputs lower than 1V are available,...Page includes several designs.  Scroll to find this one.... [Design Idea by Len Sherman, Maxim Integrated Products, Sunnyvale, CA]
Add an auxiliary voltage to a buck regulator -  31-Oct-02 Issue of EDN  You often needthan one regulated output voltage in a system. A frequently used and reasonably simple way to create this auxiliary output voltage .... [Design Idea by John Betten, Texas Instruments, Dallas, TX]
AN-1144: Maximizing Start-Up Loads with the LM3352 Regulated Buck/Boost Switched Capacitor Converter -  National Semiconductor Application Note 27 Mar2000 (app note added 7/02)
AN-1157: Positive to Negative Buck/Boost Converter using LM267X SIMPLE SWITCHER® Regulators -  National Semiconductor Application Note 27 Mar2000 (app note added 7/02)

AN-1198: LM2622 Step-Up DC/DC Converter Evaluation Board -  National Semiconductor Application Note  (app note added 2/06)
AN-667: Up/Down Sequence of Supplies Using the ADM1060 -  AN-667 Analog Devices Application Note....[App Note]
AN-H51: Buck/Boost-Based LED Drivers using the HV9910 -  Supertex Semiconductors (app note added 7/06)
Boost converter works with wide-range negative-input supply -  18-Mar-04 Issue of EDN  Assume that a design requires positive voltage, but only a negative-voltage power source is available. Using a standard boost-converter IC in the circuit of Figure 1, you can efficiently generate a positive voltage from a negative source. The boost converter generates an output voltage that's higher than the input voltage.... [Design Idea by Mike Wong, Intersil Corp, Milpitas, CA]

Buck boost regulator suits battery operation -  4-Sep-03 Issue of EDN  A buck/boost converter can step a voltage up or down. Such a converter is appropriate for battery-powered applications. One application derives a regulated 14.1V at 1A from 12V solar panels with 9 to 18V variation. In this type of battery application, efficiency is an important factor; hence, this design uses an inexpensive synchronous-rectifier-based MC33166/7 circuit.... [Design Idea by Kahou Wong, On Semiconductor, Phoenix, AZ]
Buck converter charger also provides system power -  05/22/97 EDN-Design Ideas....Switching Regulator provides  charge voltage setpoint with Current regulation, and second Switching Regulator provides5V System Power -Many systems require long-time operation during periods of power loss. Often, a gel or wet-cell lead-acid battery is  best choice because of high capacity and relatively low cost. The battery charges.... [Design Idea by Robert Hanrahan, National Semiconductor, Woodcliff Lake, NJ]
Buck Mode Switching Regulator for Solar Applications -  The purpose of a voltage regulator circuit is to take a variable input voltage and produce a steady output voltage. Two common regulator types are linear and switch-mode. Linear regulators are simple, but waste a lot of power in the process of regulating the voltage. Linear regulators can be thought of as self adjusting series resistors. Switch-mode regulators such as this one are much more efficient. Switch-mode regulators convert DC input voltages to pulses of high voltage DC. The DC pulses are used to charge a storage capacitor to the desired output voltage. The voltage is regulated by varying the width of the DC pulse.... [G. Forrest Cook]
Buck regulator controls white LED with optical feedback -  10/25/07  Video Design Ideas-EDN  By using optical feedback, you can stabilize the output level of a high-intensity LED. (electronic Design Idea added 9/08]   EDN is migrating links. This link is not verified.  Search the "title" + EDN for new link.
Buck/Boost Charge Pump Regulator Powers White LEDs from a Wide 1.6 Volt to 5.5 Volt Input -  Maxim Application Note #1021 (app note added 5/08)
Buck/Boost-Based LED Drivers using the HV9910 -  Supertex Semiconductors (app note added 7/06)
Buck-boost regulator suits battery operation -  09/04/03 EDN-Design Ideas....A buck/boost converter can step a voltage up or down. Such a converter is appropriate for battery-powered applications. One application derives a regulated 14.1V at 1A from 12V solar panels with 9 to 18V variation. In this type of battery application, efficiency is an important factor; hence, this design uses an inexpensive synchronous-rectifier-based MC33166/7 circuit.... [Design Idea by Kahou Wong, On Semiconductor, Phoenix, AZ]

Buck/Boost:  Page 1,   Page 2

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